Hi nightnurse
You've got a job you love to do, attitude to match well done what you've done and still doing.
I can understand where you're coming from every little twinge or ache. Starting you thinking is it or not.
I've got prostate Cancer that's gone to lymph nodes, spine, ribs, pelvis and a lung. Been on palliative care since February 2016.. Still having odd ache and pains now and again and think same.
I'm just living with my uninvited guest as long as possible. And also looking after my disabled wife she needs 24 /7 care she has Alzheimers and parkinsons plus other brain problems. It keeps me occupied so i don't think to much about my own problems..
Keep positive thoughts and actions you'll be ok good luck with results..
Billy